Service difficulty report · Skin · Boeing 7377CT

Difficulty date
September 19, 2021
Submitted
October 28, 2021
Operation
Air carrier
Aircraft
N7831B
Make and model
Boeing 7377CT
Aircraft serial
32752
Aircraft time
58,334 hours, 29,483 cycles
Part
Skin
Condition
Cracked
Location
L/H Horiz. Stab.
Stage of operation
IN
How discovered
9
Nature of condition
O
Precautionary procedure
K

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

CRACK INDICATION FOUND ON LEFT HORIZONTAL STABILIZER LOWER SKIN AT STAB STA 193.90. 15.5' FROM FRONT SPAR AND I/B OF DRAIN HOLE. LENGTH OF CRACK - 0.787' ; NDTM PART 6;51-00-28 / [24] ACCOMPLISHED REPAIR ON LT HORIZONTAL STABILIZER LOWER SKIN AT STAB STA 193.90 IAW B737-700 SRM 55-10-01-2R-11. THIS IS A CATEGORY B REPAIR; REINSPECTION REQUIRED AT THRESHOLD 56;000 FLIGHT CYCLES; REPEAT INSPECTION EVERY 9;000 FLIGHT CYCLES PER B737-700 SRM 55-10-01-2R-11; REPAIR 11; STEP 5; TABLE 204.; [25] VERIFIED STEP 23 AND 24

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